Permutation bolt-lock



Patented Deo. 23, 1919.

P. KISH..

PERMUTATON BOLT LOCK.

APPLICATION FILED IAN. Ie, 1919.

PAUL KISH, OF DETROIT, MICHIGAN.

riiniviUrA'rioN :Borxnnocir Specification of Letters Patent.

Patented Dec. 23, 1919.

Application led January 16, 1919. Serial No. 271,346.

To all whom it may concern Be it known that I, PAUL Kisii, a subject of the King of Great Britain, residing at Detroit, county of lVayne, State of Michigan, have invented a certain new and useful Improvement in Perniutation Bolt-Locks, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to permutation bolt locks, and its object is to provide a series of permutation elements rotatable on the bolt, any one of which is adapted to prevent longitudinal movement of the bolt in the case but, when all are properly relatively ar-I ranged, allows movement of the bolt longitudinally in either direction to lock or unlock the apparatus provided with this ydevice. A further object is to provide a simple and efficient lock of the character stated, that is compar-.uzivelyv inexpensive to manufacture and so constructed and arranged as to prevent the lock from being opened through the sense of feeling to determine the position of the permutation elements relative to the lock. To the attainment of these objects and other novel features, the invention consists in the novel construction and arrangement of the several parts as is hereinafter more fully described and claimed and shown in preferred form in the accompanying; drawings in which Figure 1 is a plan view of a lock embodying my invention. t

Fig. 2 is a section on line 2 2 of Fig. 2.

Fig. 3 is a longitudinal section taken on line 3 3 of Fig. 1.

Fig. 4L is across section taken on line 1 1 of Fig. 1.

Fig. 5 is a detail in perspective of one of the permutation tumblers.

Fig. 6 shows an alternative of construction of the lock.

Fig. 7 is a diagrammatic view of another form of construction.

Fig. 8 is a section taken on line 8 8 of Fig. 7

The case is formedof two parts 1 and 2 for convenience in construction which together provide a bolt recess 3 extending longitudinally of the case. A part of this bolt recess is formed in the member 1 which has a flat outer face adapted to be secured against one part of the member to be locked as, for instance, a door. The other part 2 of the case is provided with a half cylindrical portion a forming in conjunction with the companion part of the member 1 the cylindrical recess. The lower member 1 has formed preferably integral therewith a series of dividing walls 5 which extend into the half circular portion 4 of the part 2 and separating the longitudinal recess into spaces in which the permutation tumblers 6 are positioned and separating the elements one from the other. These dividing walls 5 have a central aperture through which the bolt 7 may be moved longitudinally. Prior to the fastening of the two parts 1 and 2together the permutation tuinblers 6 are positioned in the recess and the bolt then moved endwise therethrough for which purpose the tuinblers 6 are turned to unlocking position which will be hereinafter more fully leX- plained. After the bolt and permutation tumblers are in position the cap member 2 is placed thereover and the two parts may be riveted together as indicated in Fig. 2. rl`his plate 2 is provided with a longitudinal slot 8 through which a portion of the permutation tumblers may be observed and also providing a slot 9 in which the operating lug or handle 10 may ride. Y

The bolt, as will be readily seen more clearly in Fig. 3, is provided with a series of circumferential grooves 11 and a longitudinal groove 12 extending practically full length of the bolt and opening into and of the same width and depth as the circumferential grooves 11. The permutation tumblers 6 are cylindrical in form having a series of numbers on the outer faces thereof as is shown in Fig. 5 and each-is provided with an internal lug 13 projecting into the central aperture of the tumbler to a'distance substantially or nearly equal to the depth of the grooves 11 and 12 and of a length longitudinally of the tumbler less than the length of the tumbler so that when the bolt is positioned as shown in Fig. 3 for instance, the edges of the disks or tumblers 6 ride on the larger portions of the `bolt and completely cover the respective circumferential groove and prevent observation thereof from the outside through the slot 8 whereby the position of the lug on any tumbler may not be observed from the exterior. As will be understood from 3, the lug 'i3 rides in the circumferential groove ll allowing the tumblers G to be freely rotated on the bolt. rEhe lug 13 of each tumbler ('5 is positioned relative to a predetermined number thereon. For instance in the lirst tumbler, by bringing the numeral 5 to View through the slot 8, the lug will be positioned to register with the longitudinal groove l2 and similarly with the other tuniblers. llhen the tumblers are all so positioned, the bolt 1G may be moved longitudinally ,to locked position in which it is projected into a socket member la secured to a portion of the device to be locked. as for insta-nce the jai b of a door. lV hen the bolt has been so projected the tumblers may be turned to difierent positions which will prevent withcrawal of the bolt. il. novel feature of tins invention is in the provision of circumferential grooves in addition to the number required for the tumblers when the bolt is in unlocked position. This l have illustrated in Fig. 3 in which the additional circumferential grooves l5 and 1G are provided. These, when the bolt is in locking position, are moved into position to reo ive the lugs of the two permutation tumblers adjacent the vhandle end of t ie bolt and, while l have herein shown two suoli additional grooves, one groove may be suiiicient depending upon Vthe extent to which it is desired to project the bolt or more than two may be utilized if required, the whole purpose of which is to allow the bolt to be projected and to provide a construction which will allow all the permutation tumblers to be turned to locking position when the bolt has been projected. TWithout the provision of these circumferential grooves one or more of the permutation tumblers at the rear end of the bolt could not be turned circumferentially after projection of the bolt. @he walls 5 separate the tumblers and avoid rotation of one tumbler when turning an adjacent one.

rlhe essential characteristics of the invenN tion as above set forth may be employed in dierent characters of bolt locks. Tfor in stance in the device shown in lli socket member 2O is permanently secure t the base member 2l carrying the bolt nd permutation tumblers. rihis lock may be utilized in such cases where it is not possibiY to provide the socket member ou a movable portion of the device to be locked. in such case the hasp 22 is connected by means of a chain 23 with a fixed portion and the lock member carrying the hasp 22 may be secured to a movable portion or vice versa. rlhis construction is particularly applicable in such instances where the device is to be locked in a direction longitudinally of the axis of the bolt instead of transversely thereof as with a door. To lock the device the hasp is placed in position on the socket gli.

2() as shown in Fig. 6 and the bolt projected and the disks turned to locked position in the saine ina-nner as above described. rl`his secures the hasp and prevents its removal. in any of the cases shown, a cover 25 may be employed to shield the permutation tumblers.

rlhe essential elements of the invention may also be embodied in a padlock in the manner indicated diagrammatically in Figs. 7 and S. In this case the bolt 30 is U shaped in form having one end that engages in a socket 3l in the bolt case and the other part of the bolt is formed practically identically as shown in Fig. 3 having the circumferential and longitudinal grooves allowing it to be moved endwise through the permutation tuinblers To limit the movement of the bolt member 30 the lower end thereof in the interior of the bolt recess is provided with a knob 33 which engages the bottom of the recess when in locked position and when unlocked engages against the wall 3% which is similar to the walls 5 of Fig. 3 supporting the permutation tumblers in position. ln all of the cases mentioned, however, and in various other types of cases the same invention may be involved as is set forth in the appended claims.

lVhat l claim is l. n lock comprising a case formed of a. base part and a cover part secured together, the base part having a portion extending longitudinally thereof substantially semicircular in forni having a series of notches formed therein, the notches at the bottom being formed on a radius equal to that of the said semi-circular portion and formed on the same center providing a series of equidistant-ly spaced walls, the lugs being centrally apertured, the said cover member being semi-circular in form inclosing the walls and having a longitudinal slot in the face thereof, a series of permutation tumblers between each wall, said tumblers each having a central aperture and a radial lug extending thereinto, a bolt movable longitudinally in the apertures of the said Walls of the base and having a series of circumferential grooves greater in number than the number of permutation tumblers, and a longitudinal groove into which each circumferential groove opens, a pin for operating the bolt extending through the slot of the cover preventing rotation of the bolt, the position of the permutation tumblers with the lugs thereof in alinement longitudinally of the bolt allowing the bolt to be moved longitudinally to locked or unlocked relation, the movement to the locked relation positioning the additional groove or grooves to receive the lug of one or more permutation tumblers substantially as described.

2. ln a permutation lock, a case having a series of separate circular chambers therein,

the Wall between the chambers being apertured, there being a slot extending longitudinally of the opening to the chamber and of a length greater than the combined length of the chambers, a bolt slidable in the said apertures and having a series of circumferential grooves and a` longitudinal groove connecting the same, a series of permutation tumblers in the chambers each having a lug normally engaging in the respective circumferential groove, a pin in the bolt extending through the slot, and an apertured member positioned adjacent the end of the Case to receive the bolt when projected.'

3. In a permutation lock, a case having a series of separate chambers therein of equal length and a terminal chamber of greater length, the Walls forming the chambers being apertured and the chamber of greater length being closed at the end, there being a slot in the casing opening into the chambers, a bolt slidable in the apertures of the Walls, a pin in the bolt at the end in the chamber of greater length and extending through the slot, a series of permutation `tumblers in the chambers of equal length each having a central aperture and a radial lug projectmg thereinto, the Vbolt having a series of circumferential grooves of a number greater than the number of permutation tumblers and a longitudinal groove connecting the circumferential groove, the setting of the lugs in alinement with the longitudinal groove permitting movement of the bolt.

In testimony whereof, I sign this specification.

PAUL KISH. 

